Ado16 (BMC 1100/1300)

MkI (1962 - 1967) - Tail fin with upright rear lamp front grille fits betwwen headlamps.
MKII (1967 -1971) & MkIII (1971 -1974) - Sloping rear light (teardrop a la Taxi) front grille extends under headlamps.

http://www.ado16.info
http://www.the1100club.com